[ruby/prism] Add KeywordSplat flag to ArgumentsNode

Method calls with keyword splat args compile differently than
without since they merge the keyword arg hash with the keyword splat
hash. We know this information at parse time, so can set a flag
which the compiler can use.

https://github.com/ruby/prism/commit/e5f8a9a3cd

1 files changed, 100 insertions, 94 deletions

diff --git a/test/prism/snapshots/whitequark/args_assocs_legacy.txt b/test/prism/snapshots/whitequark/args_assocs_legacy.txt
index efca0773c7..6730512872 100644
--- a/test/prism/snapshots/whitequark/args_assocs_legacy.txt
+++ b/test/prism/snapshots/whitequark/args_assocs_legacy.txt
@@ -10,20 +10,21 @@
         │   ├── opening_loc: (1,3)-(1,4) = "("
         │   ├── arguments:
         │   │   @ ArgumentsNode (location: (1,4)-(1,13))
-        │   │   └── arguments: (length: 1)
-        │   │       └── @ KeywordHashNode (location: (1,4)-(1,13))
-        │   │           └── elements: (length: 1)
-        │   │               └── @ AssocNode (location: (1,4)-(1,13))
-        │   │                   ├── key:
-        │   │                   │   @ SymbolNode (location: (1,4)-(1,8))
-        │   │                   │   ├── opening_loc: (1,4)-(1,5) = ":"
-        │   │                   │   ├── value_loc: (1,5)-(1,8) = "foo"
-        │   │                   │   ├── closing_loc: ∅
-        │   │                   │   └── unescaped: "foo"
-        │   │                   ├── value:
-        │   │                   │   @ IntegerNode (location: (1,12)-(1,13))
-        │   │                   │   └── flags: decimal
-        │   │                   └── operator_loc: (1,9)-(1,11) = "=>"
+        │   │   ├── arguments: (length: 1)
+        │   │   │   └── @ KeywordHashNode (location: (1,4)-(1,13))
+        │   │   │       └── elements: (length: 1)
+        │   │   │           └── @ AssocNode (location: (1,4)-(1,13))
+        │   │   │               ├── key:
+        │   │   │               │   @ SymbolNode (location: (1,4)-(1,8))
+        │   │   │               │   ├── opening_loc: (1,4)-(1,5) = ":"
+        │   │   │               │   ├── value_loc: (1,5)-(1,8) = "foo"
+        │   │   │               │   ├── closing_loc: ∅
+        │   │   │               │   └── unescaped: "foo"
+        │   │   │               ├── value:
+        │   │   │               │   @ IntegerNode (location: (1,12)-(1,13))
+        │   │   │               │   └── flags: decimal
+        │   │   │               └── operator_loc: (1,9)-(1,11) = "=>"
+        │   │   └── flags: ∅
         │   ├── closing_loc: (1,13)-(1,14) = ")"
         │   ├── block: ∅
         │   ├── flags: ∅
@@ -35,20 +36,21 @@
         │   ├── opening_loc: (3,3)-(3,4) = "("
         │   ├── arguments:
         │   │   @ ArgumentsNode (location: (3,4)-(3,13))
-        │   │   └── arguments: (length: 1)
-        │   │       └── @ KeywordHashNode (location: (3,4)-(3,13))
-        │   │           └── elements: (length: 1)
-        │   │               └── @ AssocNode (location: (3,4)-(3,13))
-        │   │                   ├── key:
-        │   │                   │   @ SymbolNode (location: (3,4)-(3,8))
-        │   │                   │   ├── opening_loc: (3,4)-(3,5) = ":"
-        │   │                   │   ├── value_loc: (3,5)-(3,8) = "foo"
-        │   │                   │   ├── closing_loc: ∅
-        │   │                   │   └── unescaped: "foo"
-        │   │                   ├── value:
-        │   │                   │   @ IntegerNode (location: (3,12)-(3,13))
-        │   │                   │   └── flags: decimal
-        │   │                   └── operator_loc: (3,9)-(3,11) = "=>"
+        │   │   ├── arguments: (length: 1)
+        │   │   │   └── @ KeywordHashNode (location: (3,4)-(3,13))
+        │   │   │       └── elements: (length: 1)
+        │   │   │           └── @ AssocNode (location: (3,4)-(3,13))
+        │   │   │               ├── key:
+        │   │   │               │   @ SymbolNode (location: (3,4)-(3,8))
+        │   │   │               │   ├── opening_loc: (3,4)-(3,5) = ":"
+        │   │   │               │   ├── value_loc: (3,5)-(3,8) = "foo"
+        │   │   │               │   ├── closing_loc: ∅
+        │   │   │               │   └── unescaped: "foo"
+        │   │   │               ├── value:
+        │   │   │               │   @ IntegerNode (location: (3,12)-(3,13))
+        │   │   │               │   └── flags: decimal
+        │   │   │               └── operator_loc: (3,9)-(3,11) = "=>"
+        │   │   └── flags: ∅
         │   ├── closing_loc: (3,19)-(3,20) = ")"
         │   ├── block:
         │   │   @ BlockArgumentNode (location: (3,15)-(3,19))
@@ -74,30 +76,31 @@
         │   ├── opening_loc: ∅
         │   ├── arguments:
         │   │   @ ArgumentsNode (location: (5,9)-(5,21))
-        │   │   └── arguments: (length: 2)
-        │   │       ├── @ CallNode (location: (5,9)-(5,12))
-        │   │       │   ├── receiver: ∅
-        │   │       │   ├── call_operator_loc: ∅
-        │   │       │   ├── message_loc: (5,9)-(5,12) = "foo"
-        │   │       │   ├── opening_loc: ∅
-        │   │       │   ├── arguments: ∅
-        │   │       │   ├── closing_loc: ∅
-        │   │       │   ├── block: ∅
-        │   │       │   ├── flags: variable_call
-        │   │       │   └── name: :foo
-        │   │       └── @ KeywordHashNode (location: (5,14)-(5,21))
-        │   │           └── elements: (length: 1)
-        │   │               └── @ AssocNode (location: (5,14)-(5,21))
-        │   │                   ├── key:
-        │   │                   │   @ SymbolNode (location: (5,14)-(5,16))
-        │   │                   │   ├── opening_loc: (5,14)-(5,15) = ":"
-        │   │                   │   ├── value_loc: (5,15)-(5,16) = "a"
-        │   │                   │   ├── closing_loc: ∅
-        │   │                   │   └── unescaped: "a"
-        │   │                   ├── value:
-        │   │                   │   @ IntegerNode (location: (5,20)-(5,21))
-        │   │                   │   └── flags: decimal
-        │   │                   └── operator_loc: (5,17)-(5,19) = "=>"
+        │   │   ├── arguments: (length: 2)
+        │   │   │   ├── @ CallNode (location: (5,9)-(5,12))
+        │   │   │   │   ├── receiver: ∅
+        │   │   │   │   ├── call_operator_loc: ∅
+        │   │   │   │   ├── message_loc: (5,9)-(5,12) = "foo"
+        │   │   │   │   ├── opening_loc: ∅
+        │   │   │   │   ├── arguments: ∅
+        │   │   │   │   ├── closing_loc: ∅
+        │   │   │   │   ├── block: ∅
+        │   │   │   │   ├── flags: variable_call
+        │   │   │   │   └── name: :foo
+        │   │   │   └── @ KeywordHashNode (location: (5,14)-(5,21))
+        │   │   │       └── elements: (length: 1)
+        │   │   │           └── @ AssocNode (location: (5,14)-(5,21))
+        │   │   │               ├── key:
+        │   │   │               │   @ SymbolNode (location: (5,14)-(5,16))
+        │   │   │               │   ├── opening_loc: (5,14)-(5,15) = ":"
+        │   │   │               │   ├── value_loc: (5,15)-(5,16) = "a"
+        │   │   │               │   ├── closing_loc: ∅
+        │   │   │               │   └── unescaped: "a"
+        │   │   │               ├── value:
+        │   │   │               │   @ IntegerNode (location: (5,20)-(5,21))
+        │   │   │               │   └── flags: decimal
+        │   │   │               └── operator_loc: (5,17)-(5,19) = "=>"
+        │   │   └── flags: ∅
         │   ├── closing_loc: ∅
         │   ├── block: ∅
         │   ├── flags: ∅
@@ -110,20 +113,21 @@
         │   ├── opening_loc: (7,4)-(7,5) = "["
         │   ├── arguments:
         │   │   @ ArgumentsNode (location: (7,5)-(7,14))
-        │   │   └── arguments: (length: 1)
-        │   │       └── @ KeywordHashNode (location: (7,5)-(7,14))
-        │   │           └── elements: (length: 1)
-        │   │               └── @ AssocNode (location: (7,5)-(7,14))
-        │   │                   ├── key:
-        │   │                   │   @ SymbolNode (location: (7,5)-(7,9))
-        │   │                   │   ├── opening_loc: (7,5)-(7,6) = ":"
-        │   │                   │   ├── value_loc: (7,6)-(7,9) = "bar"
-        │   │                   │   ├── closing_loc: ∅
-        │   │                   │   └── unescaped: "bar"
-        │   │                   ├── value:
-        │   │                   │   @ IntegerNode (location: (7,13)-(7,14))
-        │   │                   │   └── flags: decimal
-        │   │                   └── operator_loc: (7,10)-(7,12) = "=>"
+        │   │   ├── arguments: (length: 1)
+        │   │   │   └── @ KeywordHashNode (location: (7,5)-(7,14))
+        │   │   │       └── elements: (length: 1)
+        │   │   │           └── @ AssocNode (location: (7,5)-(7,14))
+        │   │   │               ├── key:
+        │   │   │               │   @ SymbolNode (location: (7,5)-(7,9))
+        │   │   │               │   ├── opening_loc: (7,5)-(7,6) = ":"
+        │   │   │               │   ├── value_loc: (7,6)-(7,9) = "bar"
+        │   │   │               │   ├── closing_loc: ∅
+        │   │   │               │   └── unescaped: "bar"
+        │   │   │               ├── value:
+        │   │   │               │   @ IntegerNode (location: (7,13)-(7,14))
+        │   │   │               │   └── flags: decimal
+        │   │   │               └── operator_loc: (7,10)-(7,12) = "=>"
+        │   │   └── flags: ∅
         │   ├── closing_loc: (7,14)-(7,15) = "]"
         │   ├── block: ∅
         │   ├── flags: ∅
@@ -133,20 +137,21 @@
         │   ├── lparen_loc: (9,5)-(9,6) = "("
         │   ├── arguments:
         │   │   @ ArgumentsNode (location: (9,6)-(9,16))
-        │   │   └── arguments: (length: 1)
-        │   │       └── @ KeywordHashNode (location: (9,6)-(9,16))
-        │   │           └── elements: (length: 1)
-        │   │               └── @ AssocNode (location: (9,6)-(9,16))
-        │   │                   ├── key:
-        │   │                   │   @ SymbolNode (location: (9,6)-(9,10))
-        │   │                   │   ├── opening_loc: (9,6)-(9,7) = ":"
-        │   │                   │   ├── value_loc: (9,7)-(9,10) = "foo"
-        │   │                   │   ├── closing_loc: ∅
-        │   │                   │   └── unescaped: "foo"
-        │   │                   ├── value:
-        │   │                   │   @ IntegerNode (location: (9,14)-(9,16))
-        │   │                   │   └── flags: decimal
-        │   │                   └── operator_loc: (9,11)-(9,13) = "=>"
+        │   │   ├── arguments: (length: 1)
+        │   │   │   └── @ KeywordHashNode (location: (9,6)-(9,16))
+        │   │   │       └── elements: (length: 1)
+        │   │   │           └── @ AssocNode (location: (9,6)-(9,16))
+        │   │   │               ├── key:
+        │   │   │               │   @ SymbolNode (location: (9,6)-(9,10))
+        │   │   │               │   ├── opening_loc: (9,6)-(9,7) = ":"
+        │   │   │               │   ├── value_loc: (9,7)-(9,10) = "foo"
+        │   │   │               │   ├── closing_loc: ∅
+        │   │   │               │   └── unescaped: "foo"
+        │   │   │               ├── value:
+        │   │   │               │   @ IntegerNode (location: (9,14)-(9,16))
+        │   │   │               │   └── flags: decimal
+        │   │   │               └── operator_loc: (9,11)-(9,13) = "=>"
+        │   │   └── flags: ∅
         │   ├── rparen_loc: (9,16)-(9,17) = ")"
         │   └── block: ∅
         └── @ YieldNode (location: (11,0)-(11,17))
@@ -154,18 +159,19 @@
             ├── lparen_loc: (11,5)-(11,6) = "("
             ├── arguments:
             │   @ ArgumentsNode (location: (11,6)-(11,16))
-            │   └── arguments: (length: 1)
-            │       └── @ KeywordHashNode (location: (11,6)-(11,16))
-            │           └── elements: (length: 1)
-            │               └── @ AssocNode (location: (11,6)-(11,16))
-            │                   ├── key:
-            │                   │   @ SymbolNode (location: (11,6)-(11,10))
-            │                   │   ├── opening_loc: (11,6)-(11,7) = ":"
-            │                   │   ├── value_loc: (11,7)-(11,10) = "foo"
-            │                   │   ├── closing_loc: ∅
-            │                   │   └── unescaped: "foo"
-            │                   ├── value:
-            │                   │   @ IntegerNode (location: (11,14)-(11,16))
-            │                   │   └── flags: decimal
-            │                   └── operator_loc: (11,11)-(11,13) = "=>"
+            │   ├── arguments: (length: 1)
+            │   │   └── @ KeywordHashNode (location: (11,6)-(11,16))
+            │   │       └── elements: (length: 1)
+            │   │           └── @ AssocNode (location: (11,6)-(11,16))
+            │   │               ├── key:
+            │   │               │   @ SymbolNode (location: (11,6)-(11,10))
+            │   │               │   ├── opening_loc: (11,6)-(11,7) = ":"
+            │   │               │   ├── value_loc: (11,7)-(11,10) = "foo"
+            │   │               │   ├── closing_loc: ∅
+            │   │               │   └── unescaped: "foo"
+            │   │               ├── value:
+            │   │               │   @ IntegerNode (location: (11,14)-(11,16))
+            │   │               │   └── flags: decimal
+            │   │               └── operator_loc: (11,11)-(11,13) = "=>"
+            │   └── flags: ∅
             └── rparen_loc: (11,16)-(11,17) = ")"